[Bug]: Claude model provided by Github Copliot cannot use only in opencode

[cywwycedward]

Prerequisites

• I will write this issue in English (see our Language Policy)
• I have searched existing issues to avoid duplicates
• I am using the latest version of oh-my-opencode
• I have read the documentation

Bug Description

I used all Claude models provided by Github Copilot like Claude Opus 4.5,Claude Haiku 4.5,Claude Sonnet 4.5 and so on in opencode but it reported:

Bad Request: {"error":{"message":"The requested model is not supported.","code":"model_not_supported","param":"model","type":"invalid_request_err

I checked my copilot settings that Claude models are enabled.And,I tried to use them in Github Copilot extension in VsCode and they can be used.

And I tested other models provided by Github Copilot like Gemini 3 pro in opencode and it successed.

Steps to Reproduce

1. install opencode and oh-my-opencode just as the documention said.

Expected Behavior

Claude models provided by Github Copilot can be used

Actual Behavior

They can‘t

Doctor Output

Installation
────────────────────────────────────────
  ✓ OpenCode Installation → 1.1.44
  ✓ Plugin Registration → Registered (pinned: latest)

Configuration
────────────────────────────────────────
  ✓ Configuration Validity → Valid JSON config
  ✓ Model Resolution → 9 agents, 7 categories (16 overrides), 2369 available

Authentication
────────────────────────────────────────
  ✓ Anthropic (Claude) Auth → Auth plugin available
  ○ OpenAI (ChatGPT) Auth → Auth plugin not installed
  ○ Google (Gemini) Auth → Auth plugin not installed

Dependencies
────────────────────────────────────────
  ⚠ AST-Grep CLI → Not installed (optional)
  ✓ AST-Grep NAPI → installed
  ⚠ Comment Checker → Not installed (optional)

Tools & Servers
────────────────────────────────────────
  ⚠ GitHub CLI → Not installed (optional)
  ⚠ LSP Servers → No LSP servers detected
  ✓ Built-in MCP Servers → 2 built-in servers enabled
  ○ User MCP Configuration → No user MCP configuration found
  ○ MCP OAuth Tokens → No OAuth tokens configured

Updates
────────────────────────────────────────
  ✓ Version Status → Up to date (3.1.8)

Summary
────────────────────────────────────────

  8 passed, 0 failed, 4 warnings, 4 skipped
  Total: 16 checks in 1666ms

⚠ All systems operational with warnings.

Error Logs

Configuration

{
  "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
  "agents": {
    "sisyphus": {
      "model": "github-copilot/claude-sonnet-4.5"
    },
    "oracle": {
      "model": "github-copilot/gpt-5.2",
      "variant": "high"
    },
    "librarian": {
      "model": "github-copilot/claude-sonnet-4.5"
    },
    "explore": {
      "model": "github-copilot/gpt-5-mini"
    },
    "multimodal-looker": {
      "model": "github-copilot/gemini-3-flash"
    },
    "prometheus": {
      "model": "github-copilot/claude-opus-4.5",
      "variant": "max"
    },
    "metis": {
      "model": "github-copilot/claude-opus-4.5",
      "variant": "max"
    },
    "momus": {
      "model": "github-copilot/gpt-5.2",
      "variant": "medium"
    },
    "atlas": {
      "model": "github-copilot/claude-sonnet-4.5"
    }
  },
  "categories": {
    "visual-engineering": {
      "model": "github-copilot/gemini-3-pro"
    },
    "ultrabrain": {
      "model": "github-copilot/gpt-5.2-codex",
      "variant": "xhigh"
    },
    "artistry": {
      "model": "github-copilot/gemini-3-pro",
      "variant": "max"
    },
    "quick": {
      "model": "github-copilot/claude-haiku-4.5"
    },
    "unspecified-low": {
      "model": "github-copilot/claude-sonnet-4.5"
    },
    "unspecified-high": {
      "model": "github-copilot/claude-sonnet-4.5"
    },
    "writing": {
      "model": "github-copilot/gemini-3-flash"
    }
  }
}

Additional Context

No response

Operating System

Windows

OpenCode Version

1.1.44

[Sunmer8]

Enable models in github setting